Machine for edge-uniting veneers



Sept. 20, 1927.

MACHINE FOR EDGE IjNITING VENEERS Filed Nov 23, 1925.

3 Sheets-Sheet 1 Sept. 20, 1927. J. BLACK MACHINE FOR EDGE nun-me VENEERS Filed Nov. 23, 1925 3 Sheets-Sheet 2 Sept. 20, 1927. 6 3,194

J. E. BLACK MAGHI NE FOR EDGE UNITING VENEERS Filed Nov. 23, 1925 3 Sheets-Sheet 3 Patented Sept. 20, 1927.

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MACHINE FOR EDGE-UNITING V'ENEEBS.

Application filed November 23,;1925. Serial m. 70,917.

This invention has to do with machines for edge uniting veneers. The invention has to do particularly with machines. for di-- rectly edge uniting the veneer sections without the use of any facing strips of paper,

cloth or other material.

The main object of the invention is to provide a machine for directly edge unitingthe veneer strips by a continuous. longitudinal movement as distinguished from a sidewise or transverse movement of the, veneer strips. That is to say, it is an object of the invention to provide means for causing theiveneer sections to be brought together and direct edge united by an operation in which the strips, travellengthwise instead of transversely.

It is another object ofthe invention to provide a machine for heating the edge porac tions of the strips during the uniting operation so as to assist andimprove the hardening action of the adhesive used. In this connection, it is an object to use an adhesive of such' composition that its setting is dependent rather u on. the application of a certain degree of eat as distinguished from a mere drying action due to the application of heat. 1 Another object of the invention is to proat vide a machine-of very simple arrangement and construction, one which will be rugged and well able to perform the work for which it is intended, and one which shall be cheap to construct and maintain. Other objects and uses of the invention will appear from a detailed description of the same, which consists in the features of construction and combinations of parts hereinafter described and claimed.

In the drawings:- Figure 1 shows a side elevation of a machine embodying the features of the present invention; Fig. 2 shows an end view at right angles to Fig. l;

Fig. 3 shows a fragmentary takenon'. the line 33 of Fig. 2, p the direction of the arrows;

Ian view ooklng m Fig. a shows a transverse section on the '5 line '4-4 of Fig. 2 locking in the direction of the arrows, but on enlarged scale; and

Fig. 5 shows. a fragmeptary section on the line 5--5 of Fig. 2, looking in the direction of the arrows. The machine includes a stand 6 carrying a table 7 on which the materialis supported. A bracket arm 8 reaches out over the table from one side so as to leave a considerable clear space beneath said arm within which the required sizeof work may be manipulated. 1

Located in the table and preferably projectmg slightly above the surface thereof are the two carriers 9 and 10. These are generally ofthe chain type,-but are preferably relatively thin, so that their surfaces do not project materially or appreciably above the surface of the table.

These conveyors 9 and 10 preferably slant or converge towards each other at one end, as clearly indicated in Figs. 1 and 3. At the front ends where they are most separated, they pass over idler pulleys 11, and at their rear ends where they are close together, they pass over drivingpulleys 12. The idlers 11 are carried on a transverse shaft 13. The driving pulleys 12 are carried on another transverse shaft 14: which is conveniently driven in any desired manner from a pulley 15. The details of this drive are not illus trated, since manifestly many difierent arrangements of drives may be used.

The various pulleys are more or less flexibly carried on the two shafts 13 and 14 re spec'tively, since a sort of universal joint connection is desired, owing to the slight angularity at which the pulleys are placed on the shafts. 1

Supported by the free end of the bracket arm 8 is a presser head 15. The same includes a series of cross blocks 16,-one of which is illustrated in detail in Fig. 4. Each of these cross blocksis spring pressed downwards with respect to the presser head 15 as by means of the springs 17 located within the sockets 18 and forcing the lugs 19 downwards. These lugs bear directly against the top of the corresponding cross block 16, as .clearly shown. in Fig. 4. Each cross block 16 carries a pair of rollers 20 and ,21, respec- 10o tively, mounted on shafts 245, which rollers are placed directly above the positions of the conveyor chains 9 and 10, respectively. Consequently, the veneer strips are firmly held against the respective conveyor chains.

The'two veneer strips 22 and 23 are illustrated in place on' the table in Fig. 4. Their adjoining ends are in direct contact at "a pomt intermediate between the two convey- The blocks 16 carry the shoes 25 which bear down against a longitudinally extending central plate or bar 25 which 1s located directly above the adjoining edge ortions of the veneer strips. This plate or b ock 25* is preferably heated in any convenient manner, as, for example, by the use of electric resistance wires, 25.

Beneath the position of the plate or block 25 there may be located another heating element 26 embedded directly within the table and serving to heat the underside of the veneerjoint.

The veneer strips are fed into the machine in a condition of almost complete parallelism, their adjoining edges being simultaneously coated with the proper adhesive. Owing to the converging positions of the two conveyors 9 and 10, the conveyor strips are worked into firm solid edge engagement and are directly edge united by the adhesive on their edges.

The adhesive is conveniently placed upon the edges of the strips by the use of a small thin disk 27 of tapering thickness, as shown particularly in Figs. 3 and 5. This disk is jonrnaled in a pair of blocks 28 and 29 which are countersunk into the top face of the table, the edge portion of the disk projecting slightly above the surface of the table.

Beneath the table is a glue pot 30' into which the lower portion of the disk projects and from which a continuous supply of adhesive is available. are worked into the machine, their edges come against the sides of the wheel or roller 27 and are preferably treated with adhesive, the wheel also serving to hold the strips in spaced relation at this point, and preventing a tendency for the edges to overlap one another. They then travel underneath the shoe 25 and are simultaneously carried into firm edge engagement. As they travel beneath the shoe they are heated to the proper point to insure the chemical reaction which results in setting the adhesive.

If desired, the roller 27 may be drivenv positively from the same power supply as is used for operating the conveyors. For this purpose, Ihave illustrated the driving connections in Fig. 1, which include a small shaft 81 driven by a worm gear drive 32 from the shaft 33 onwvhich the pulley 15 ismounted.

While I have herein shown and described only certain embodiments of the features of my present invention, still I do not-intend to limit myself to the same, except as I may do so in the claims.

I claim:

1. In a machine of the class described, the combination of a work table, a pair of horizontally traveling conveyors located close. to each other in the top surface of the same,

carry the adjacent portions of a As the veneer stripsand mounted for travel in directions converging slightl towards each other and adapted to carry t 1e adjacent portions of a pair of veneer strips into direct edge contact with each other, spring pressed rollers above the positions of said conveyors for firmly clamping the veneer strips thereagainst, a wheel mounted for rotation about a horizontal transverse axis at a position between the more separated ends of the conveyors, said disk tapering in thickness, a glue pot beneath the disk and serving to deliver glue onto the faces thereof, a presser foot above the table at a position intermediate between the conveyors and adapted to firmly contact the top surfaces of the veneer strips undergoing treatment, and means for heating said presser foot for the purpose specified, substantially as describe 2. In a machine of the class described, the combination of a. work table, a pair of horizontally traveling conveyors located close to each other in the top surface of the same and mounted for travel in directions converging slightly towards each other and adapted to pair of veneer strips into direct edge contact with each other, presser means above the positions of said conveyors for firmly clamping the veneer strips thereagainst, glue carrying means located between the more separated ends of the conveyors and adapted to hold the strips in separated relation at that point and to deliver glue onto the edges of the veneer strips, a Presser foot above the table at a position intermediate between the conveyors and adapted to firmly contact the top surfaces of the veneer strips undergoing treatment and means for heating the presser foot for the purpose specified, substantially as described.

3. In a machine of the class described the combination of a work table, means for feeding two veneer strips forwardly and in con verging relation to one another, and a gluing device extending above the surface of said table between said feeding means and in po sition to apply glue to the edges of the ve-' neer strips and to hold said edges in separated relation at said point and to permit said edges to come into butt contact with one an other in advance of said point, substantially as described. i

4. In a machine of the class described, the combination of a table, companion feeding devices on opposite sides of the feeding line along said table, said feeding devices acting in opposition to one another to feed two veneer strips forwardly and in converging relation to one another, and a gluing device extending above the surface of said table be tween said feeding means and in position to apply glue to the edges of the veneer strips and to hold said edges in separated relatiop at said point and. to permit said edges to along said ta combination of a table, com

in opposition to oneanother to feed two veneer strips forwardly and in conver "ng relation to one another, a gluing whee having its upper portion protruding abovethe surface of said table and a lue receptacle be-' 'lowthe surface 0 said ta 1e into which said wheel extends, the wheel being located in the feeding line at a point to the rear of the intended point of contact for the ed 'es of the veneer strips andserving to app glue to said edges, and servin to hold said edges in 6. a machine of the class described ,the

combination of a table, com anion feeding devices on opposite sides of t e feeding line along said table, said feeding devices acting in opposition to one another to feed two ve neer strips forwardly and'in converging relation to one another, a gluing wheel having its upper portion protruding above the surface of said table, a glue rece tacle below the surface of said table into w ch said wheel extends, the wheel being located in the feeding line at a int to the rear of the intended point 0 contact for the edges of the veneer strips and serving to apply lue to said edges, and serving to hold said e ges 1n separated relation behind the intended point r of contact. with one another, and resser means above the line of edge contact of the separated relation behind the intended oint veneer stripz and serving to'impart pressure of contactwith one another, substantia y as thereto, su

described.

tantially as described.

o n; E. BLACK. 

